Commit | Line | Data |
---|---|---|
f0706e82 | 1 | /* |
0d143fe1 JB |
2 | * Interface handling (except master interface) |
3 | * | |
f0706e82 JB |
4 | * Copyright 2002-2005, Instant802 Networks, Inc. |
5 | * Copyright 2005-2006, Devicescape Software, Inc. | |
6 | * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz> | |
75636525 | 7 | * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> |
f0706e82 JB |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | */ | |
5a0e3ad6 | 13 | #include <linux/slab.h> |
f0706e82 JB |
14 | #include <linux/kernel.h> |
15 | #include <linux/if_arp.h> | |
16 | #include <linux/netdevice.h> | |
17 | #include <linux/rtnetlink.h> | |
18 | #include <net/mac80211.h> | |
cf0277e7 | 19 | #include <net/ieee80211_radiotap.h> |
f0706e82 JB |
20 | #include "ieee80211_i.h" |
21 | #include "sta_info.h" | |
e9f207f0 | 22 | #include "debugfs_netdev.h" |
ee385855 | 23 | #include "mesh.h" |
0d143fe1 | 24 | #include "led.h" |
24487981 | 25 | #include "driver-ops.h" |
cf0277e7 | 26 | #include "wme.h" |
1be7fe8d | 27 | #include "rate.h" |
0d143fe1 | 28 | |
c771c9d8 JB |
29 | /** |
30 | * DOC: Interface list locking | |
31 | * | |
32 | * The interface list in each struct ieee80211_local is protected | |
33 | * three-fold: | |
34 | * | |
35 | * (1) modifications may only be done under the RTNL | |
36 | * (2) modifications and readers are protected against each other by | |
37 | * the iflist_mtx. | |
38 | * (3) modifications are done in an RCU manner so atomic readers | |
39 | * can traverse the list in RCU-safe blocks. | |
40 | * | |
41 | * As a consequence, reads (traversals) of the list can be protected | |
42 | * by either the RTNL, the iflist_mtx or RCU. | |
43 | */ | |
44 | ||
45 | ||
cc45ae54 JB |
46 | static u32 ieee80211_idle_off(struct ieee80211_local *local, |
47 | const char *reason) | |
48 | { | |
49 | if (!(local->hw.conf.flags & IEEE80211_CONF_IDLE)) | |
50 | return 0; | |
51 | ||
52 | local->hw.conf.flags &= ~IEEE80211_CONF_IDLE; | |
53 | return IEEE80211_CONF_CHANGE_IDLE; | |
54 | } | |
55 | ||
56 | static u32 ieee80211_idle_on(struct ieee80211_local *local) | |
57 | { | |
58 | if (local->hw.conf.flags & IEEE80211_CONF_IDLE) | |
59 | return 0; | |
60 | ||
61 | drv_flush(local, false); | |
62 | ||
63 | local->hw.conf.flags |= IEEE80211_CONF_IDLE; | |
64 | return IEEE80211_CONF_CHANGE_IDLE; | |
65 | } | |
66 | ||
67 | static u32 __ieee80211_recalc_idle(struct ieee80211_local *local) | |
68 | { | |
69 | struct ieee80211_sub_if_data *sdata; | |
70 | int count = 0; | |
71 | bool working = false, scanning = false; | |
72 | unsigned int led_trig_start = 0, led_trig_stop = 0; | |
73 | struct ieee80211_roc_work *roc; | |
74 | ||
75 | #ifdef CONFIG_PROVE_LOCKING | |
76 | WARN_ON(debug_locks && !lockdep_rtnl_is_held() && | |
77 | !lockdep_is_held(&local->iflist_mtx)); | |
78 | #endif | |
79 | lockdep_assert_held(&local->mtx); | |
80 | ||
81 | list_for_each_entry(sdata, &local->interfaces, list) { | |
82 | if (!ieee80211_sdata_running(sdata)) { | |
83 | sdata->vif.bss_conf.idle = true; | |
84 | continue; | |
85 | } | |
86 | ||
87 | sdata->old_idle = sdata->vif.bss_conf.idle; | |
88 | ||
89 | /* do not count disabled managed interfaces */ | |
90 | if (sdata->vif.type == NL80211_IFTYPE_STATION && | |
91 | !sdata->u.mgd.associated && | |
92 | !sdata->u.mgd.auth_data && | |
93 | !sdata->u.mgd.assoc_data) { | |
94 | sdata->vif.bss_conf.idle = true; | |
95 | continue; | |
96 | } | |
97 | /* do not count unused IBSS interfaces */ | |
98 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC && | |
99 | !sdata->u.ibss.ssid_len) { | |
100 | sdata->vif.bss_conf.idle = true; | |
101 | continue; | |
102 | } | |
f142c6b9 JB |
103 | |
104 | if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) | |
105 | continue; | |
106 | ||
cc45ae54 JB |
107 | /* count everything else */ |
108 | sdata->vif.bss_conf.idle = false; | |
109 | count++; | |
110 | } | |
111 | ||
112 | if (!local->ops->remain_on_channel) { | |
113 | list_for_each_entry(roc, &local->roc_list, list) { | |
114 | working = true; | |
115 | roc->sdata->vif.bss_conf.idle = false; | |
116 | } | |
117 | } | |
118 | ||
e2fd5dbc JB |
119 | sdata = rcu_dereference_protected(local->scan_sdata, |
120 | lockdep_is_held(&local->mtx)); | |
121 | if (sdata && !(local->hw.flags & IEEE80211_HW_SCAN_WHILE_IDLE)) { | |
cc45ae54 | 122 | scanning = true; |
e2fd5dbc | 123 | sdata->vif.bss_conf.idle = false; |
cc45ae54 JB |
124 | } |
125 | ||
126 | list_for_each_entry(sdata, &local->interfaces, list) { | |
127 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR || | |
f142c6b9 JB |
128 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN || |
129 | sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) | |
cc45ae54 JB |
130 | continue; |
131 | if (sdata->old_idle == sdata->vif.bss_conf.idle) | |
132 | continue; | |
133 | if (!ieee80211_sdata_running(sdata)) | |
134 | continue; | |
135 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_IDLE); | |
136 | } | |
137 | ||
138 | if (working || scanning) | |
139 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
140 | else | |
141 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
142 | ||
143 | if (count) | |
144 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; | |
145 | else | |
146 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; | |
147 | ||
148 | ieee80211_mod_tpt_led_trig(local, led_trig_start, led_trig_stop); | |
149 | ||
150 | if (working) | |
151 | return ieee80211_idle_off(local, "working"); | |
152 | if (scanning) | |
153 | return ieee80211_idle_off(local, "scanning"); | |
154 | if (!count) | |
155 | return ieee80211_idle_on(local); | |
156 | else | |
157 | return ieee80211_idle_off(local, "in use"); | |
158 | ||
159 | return 0; | |
160 | } | |
161 | ||
162 | void ieee80211_recalc_idle(struct ieee80211_local *local) | |
163 | { | |
164 | u32 chg; | |
165 | ||
166 | mutex_lock(&local->iflist_mtx); | |
167 | chg = __ieee80211_recalc_idle(local); | |
168 | mutex_unlock(&local->iflist_mtx); | |
169 | if (chg) | |
170 | ieee80211_hw_config(local, chg); | |
171 | } | |
172 | ||
0d143fe1 JB |
173 | static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) |
174 | { | |
175 | int meshhdrlen; | |
176 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
177 | ||
178 | meshhdrlen = (sdata->vif.type == NL80211_IFTYPE_MESH_POINT) ? 5 : 0; | |
179 | ||
180 | /* FIX: what would be proper limits for MTU? | |
181 | * This interface uses 802.3 frames. */ | |
182 | if (new_mtu < 256 || | |
183 | new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6 - meshhdrlen) { | |
184 | return -EINVAL; | |
185 | } | |
186 | ||
0d143fe1 JB |
187 | dev->mtu = new_mtu; |
188 | return 0; | |
189 | } | |
190 | ||
47846c9b JB |
191 | static int ieee80211_change_mac(struct net_device *dev, void *addr) |
192 | { | |
193 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
fc5f7577 | 194 | struct sockaddr *sa = addr; |
47846c9b JB |
195 | int ret; |
196 | ||
9607e6b6 | 197 | if (ieee80211_sdata_running(sdata)) |
47846c9b JB |
198 | return -EBUSY; |
199 | ||
fc5f7577 | 200 | ret = eth_mac_addr(dev, sa); |
47846c9b JB |
201 | |
202 | if (ret == 0) | |
fc5f7577 | 203 | memcpy(sdata->vif.addr, sa->sa_data, ETH_ALEN); |
47846c9b JB |
204 | |
205 | return ret; | |
206 | } | |
207 | ||
0d143fe1 JB |
208 | static inline int identical_mac_addr_allowed(int type1, int type2) |
209 | { | |
210 | return type1 == NL80211_IFTYPE_MONITOR || | |
211 | type2 == NL80211_IFTYPE_MONITOR || | |
f142c6b9 JB |
212 | type1 == NL80211_IFTYPE_P2P_DEVICE || |
213 | type2 == NL80211_IFTYPE_P2P_DEVICE || | |
0d143fe1 JB |
214 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_WDS) || |
215 | (type1 == NL80211_IFTYPE_WDS && | |
216 | (type2 == NL80211_IFTYPE_WDS || | |
217 | type2 == NL80211_IFTYPE_AP)) || | |
218 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_AP_VLAN) || | |
219 | (type1 == NL80211_IFTYPE_AP_VLAN && | |
220 | (type2 == NL80211_IFTYPE_AP || | |
221 | type2 == NL80211_IFTYPE_AP_VLAN)); | |
222 | } | |
223 | ||
87490f6d JB |
224 | static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata, |
225 | enum nl80211_iftype iftype) | |
0d143fe1 | 226 | { |
b4a4bf5d | 227 | struct ieee80211_local *local = sdata->local; |
87490f6d | 228 | struct ieee80211_sub_if_data *nsdata; |
0d143fe1 | 229 | |
87490f6d | 230 | ASSERT_RTNL(); |
0d143fe1 JB |
231 | |
232 | /* we hold the RTNL here so can safely walk the list */ | |
233 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
371a255e | 234 | if (nsdata != sdata && ieee80211_sdata_running(nsdata)) { |
0d143fe1 JB |
235 | /* |
236 | * Allow only a single IBSS interface to be up at any | |
237 | * time. This is restricted because beacon distribution | |
238 | * cannot work properly if both are in the same IBSS. | |
239 | * | |
240 | * To remove this restriction we'd have to disallow them | |
241 | * from setting the same SSID on different IBSS interfaces | |
242 | * belonging to the same hardware. Then, however, we're | |
243 | * faced with having to adopt two different TSF timers... | |
244 | */ | |
87490f6d | 245 | if (iftype == NL80211_IFTYPE_ADHOC && |
0d143fe1 JB |
246 | nsdata->vif.type == NL80211_IFTYPE_ADHOC) |
247 | return -EBUSY; | |
248 | ||
249 | /* | |
250 | * The remaining checks are only performed for interfaces | |
251 | * with the same MAC address. | |
252 | */ | |
371a255e JB |
253 | if (!ether_addr_equal(sdata->vif.addr, |
254 | nsdata->vif.addr)) | |
0d143fe1 JB |
255 | continue; |
256 | ||
257 | /* | |
258 | * check whether it may have the same address | |
259 | */ | |
87490f6d | 260 | if (!identical_mac_addr_allowed(iftype, |
0d143fe1 JB |
261 | nsdata->vif.type)) |
262 | return -ENOTUNIQ; | |
263 | ||
264 | /* | |
265 | * can only add VLANs to enabled APs | |
266 | */ | |
87490f6d | 267 | if (iftype == NL80211_IFTYPE_AP_VLAN && |
0d143fe1 JB |
268 | nsdata->vif.type == NL80211_IFTYPE_AP) |
269 | sdata->bss = &nsdata->u.ap; | |
270 | } | |
271 | } | |
272 | ||
87490f6d JB |
273 | return 0; |
274 | } | |
275 | ||
3a25a8c8 JB |
276 | static int ieee80211_check_queues(struct ieee80211_sub_if_data *sdata) |
277 | { | |
278 | int n_queues = sdata->local->hw.queues; | |
279 | int i; | |
280 | ||
281 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { | |
282 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] == | |
283 | IEEE80211_INVAL_HW_QUEUE)) | |
284 | return -EINVAL; | |
285 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] >= | |
286 | n_queues)) | |
287 | return -EINVAL; | |
288 | } | |
289 | ||
bb3e10fb LC |
290 | if ((sdata->vif.type != NL80211_IFTYPE_AP) || |
291 | !(sdata->local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)) { | |
3a25a8c8 JB |
292 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; |
293 | return 0; | |
294 | } | |
295 | ||
296 | if (WARN_ON_ONCE(sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE)) | |
297 | return -EINVAL; | |
298 | ||
299 | if (WARN_ON_ONCE(sdata->vif.cab_queue >= n_queues)) | |
300 | return -EINVAL; | |
301 | ||
302 | return 0; | |
303 | } | |
304 | ||
85416a4f CL |
305 | void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, |
306 | const int offset) | |
307 | { | |
308 | struct ieee80211_local *local = sdata->local; | |
309 | u32 flags = sdata->u.mntr_flags; | |
310 | ||
311 | #define ADJUST(_f, _s) do { \ | |
312 | if (flags & MONITOR_FLAG_##_f) \ | |
313 | local->fif_##_s += offset; \ | |
314 | } while (0) | |
315 | ||
316 | ADJUST(FCSFAIL, fcsfail); | |
317 | ADJUST(PLCPFAIL, plcpfail); | |
318 | ADJUST(CONTROL, control); | |
319 | ADJUST(CONTROL, pspoll); | |
320 | ADJUST(OTHER_BSS, other_bss); | |
321 | ||
322 | #undef ADJUST | |
323 | } | |
324 | ||
3a25a8c8 JB |
325 | static void ieee80211_set_default_queues(struct ieee80211_sub_if_data *sdata) |
326 | { | |
327 | struct ieee80211_local *local = sdata->local; | |
328 | int i; | |
329 | ||
330 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { | |
331 | if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) | |
332 | sdata->vif.hw_queue[i] = IEEE80211_INVAL_HW_QUEUE; | |
a9d3c05c | 333 | else if (local->hw.queues >= IEEE80211_NUM_ACS) |
3a25a8c8 | 334 | sdata->vif.hw_queue[i] = i; |
a9d3c05c JB |
335 | else |
336 | sdata->vif.hw_queue[i] = 0; | |
3a25a8c8 JB |
337 | } |
338 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; | |
339 | } | |
340 | ||
075e0847 | 341 | static int ieee80211_add_virtual_monitor(struct ieee80211_local *local) |
4b6f1dd6 JB |
342 | { |
343 | struct ieee80211_sub_if_data *sdata; | |
685fb72b | 344 | int ret = 0; |
4b6f1dd6 JB |
345 | |
346 | if (!(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF)) | |
347 | return 0; | |
348 | ||
685fb72b JB |
349 | mutex_lock(&local->iflist_mtx); |
350 | ||
4b6f1dd6 | 351 | if (local->monitor_sdata) |
685fb72b | 352 | goto out_unlock; |
4b6f1dd6 JB |
353 | |
354 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, GFP_KERNEL); | |
685fb72b JB |
355 | if (!sdata) { |
356 | ret = -ENOMEM; | |
357 | goto out_unlock; | |
358 | } | |
4b6f1dd6 JB |
359 | |
360 | /* set up data */ | |
361 | sdata->local = local; | |
362 | sdata->vif.type = NL80211_IFTYPE_MONITOR; | |
363 | snprintf(sdata->name, IFNAMSIZ, "%s-monitor", | |
364 | wiphy_name(local->hw.wiphy)); | |
365 | ||
3a25a8c8 JB |
366 | ieee80211_set_default_queues(sdata); |
367 | ||
4b6f1dd6 JB |
368 | ret = drv_add_interface(local, sdata); |
369 | if (WARN_ON(ret)) { | |
370 | /* ok .. stupid driver, it asked for this! */ | |
371 | kfree(sdata); | |
685fb72b | 372 | goto out_unlock; |
4b6f1dd6 JB |
373 | } |
374 | ||
3a25a8c8 JB |
375 | ret = ieee80211_check_queues(sdata); |
376 | if (ret) { | |
377 | kfree(sdata); | |
685fb72b | 378 | goto out_unlock; |
3a25a8c8 JB |
379 | } |
380 | ||
4b6f1dd6 | 381 | rcu_assign_pointer(local->monitor_sdata, sdata); |
685fb72b JB |
382 | out_unlock: |
383 | mutex_unlock(&local->iflist_mtx); | |
384 | return ret; | |
4b6f1dd6 JB |
385 | } |
386 | ||
075e0847 | 387 | static void ieee80211_del_virtual_monitor(struct ieee80211_local *local) |
4b6f1dd6 JB |
388 | { |
389 | struct ieee80211_sub_if_data *sdata; | |
390 | ||
391 | if (!(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF)) | |
392 | return; | |
393 | ||
685fb72b | 394 | mutex_lock(&local->iflist_mtx); |
4b6f1dd6 | 395 | |
685fb72b JB |
396 | sdata = rcu_dereference_protected(local->monitor_sdata, |
397 | lockdep_is_held(&local->iflist_mtx)); | |
4b6f1dd6 | 398 | if (!sdata) |
685fb72b | 399 | goto out_unlock; |
4b6f1dd6 JB |
400 | |
401 | rcu_assign_pointer(local->monitor_sdata, NULL); | |
402 | synchronize_net(); | |
403 | ||
404 | drv_remove_interface(local, sdata); | |
405 | ||
406 | kfree(sdata); | |
685fb72b JB |
407 | out_unlock: |
408 | mutex_unlock(&local->iflist_mtx); | |
4b6f1dd6 JB |
409 | } |
410 | ||
34d4bc4d JB |
411 | /* |
412 | * NOTE: Be very careful when changing this function, it must NOT return | |
413 | * an error on interface type changes that have been pre-checked, so most | |
414 | * checks should be in ieee80211_check_concurrent_iface. | |
415 | */ | |
f142c6b9 | 416 | int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) |
87490f6d | 417 | { |
f142c6b9 JB |
418 | struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); |
419 | struct net_device *dev = wdev->netdev; | |
87490f6d JB |
420 | struct ieee80211_local *local = sdata->local; |
421 | struct sta_info *sta; | |
422 | u32 changed = 0; | |
423 | int res; | |
424 | u32 hw_reconf_flags = 0; | |
425 | ||
0d143fe1 JB |
426 | switch (sdata->vif.type) { |
427 | case NL80211_IFTYPE_WDS: | |
428 | if (!is_valid_ether_addr(sdata->u.wds.remote_addr)) | |
429 | return -ENOLINK; | |
430 | break; | |
665c93a9 JB |
431 | case NL80211_IFTYPE_AP_VLAN: { |
432 | struct ieee80211_sub_if_data *master; | |
433 | ||
0d143fe1 JB |
434 | if (!sdata->bss) |
435 | return -ENOLINK; | |
665c93a9 | 436 | |
0d143fe1 | 437 | list_add(&sdata->u.vlan.list, &sdata->bss->vlans); |
665c93a9 JB |
438 | |
439 | master = container_of(sdata->bss, | |
440 | struct ieee80211_sub_if_data, u.ap); | |
441 | sdata->control_port_protocol = | |
442 | master->control_port_protocol; | |
443 | sdata->control_port_no_encrypt = | |
444 | master->control_port_no_encrypt; | |
0d143fe1 | 445 | break; |
665c93a9 | 446 | } |
0d143fe1 JB |
447 | case NL80211_IFTYPE_AP: |
448 | sdata->bss = &sdata->u.ap; | |
449 | break; | |
450 | case NL80211_IFTYPE_MESH_POINT: | |
0d143fe1 JB |
451 | case NL80211_IFTYPE_STATION: |
452 | case NL80211_IFTYPE_MONITOR: | |
453 | case NL80211_IFTYPE_ADHOC: | |
f142c6b9 | 454 | case NL80211_IFTYPE_P2P_DEVICE: |
0d143fe1 JB |
455 | /* no special treatment */ |
456 | break; | |
457 | case NL80211_IFTYPE_UNSPECIFIED: | |
2e161f78 | 458 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
459 | case NL80211_IFTYPE_P2P_CLIENT: |
460 | case NL80211_IFTYPE_P2P_GO: | |
0d143fe1 JB |
461 | /* cannot happen */ |
462 | WARN_ON(1); | |
463 | break; | |
464 | } | |
465 | ||
466 | if (local->open_count == 0) { | |
24487981 | 467 | res = drv_start(local); |
0d143fe1 JB |
468 | if (res) |
469 | goto err_del_bss; | |
4e6cbfd0 JL |
470 | if (local->ops->napi_poll) |
471 | napi_enable(&local->napi); | |
e8975581 JB |
472 | /* we're brought up, everything changes */ |
473 | hw_reconf_flags = ~0; | |
1f87f7d3 | 474 | ieee80211_led_radio(local, true); |
67408c8c JB |
475 | ieee80211_mod_tpt_led_trig(local, |
476 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
0d143fe1 JB |
477 | } |
478 | ||
479 | /* | |
bf533e0b JB |
480 | * Copy the hopefully now-present MAC address to |
481 | * this interface, if it has the special null one. | |
0d143fe1 | 482 | */ |
f142c6b9 | 483 | if (dev && is_zero_ether_addr(dev->dev_addr)) { |
bf533e0b JB |
484 | memcpy(dev->dev_addr, |
485 | local->hw.wiphy->perm_addr, | |
486 | ETH_ALEN); | |
487 | memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); | |
488 | ||
489 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
4d6c36fa JB |
490 | res = -EADDRNOTAVAIL; |
491 | goto err_stop; | |
0adc23f5 | 492 | } |
0d143fe1 JB |
493 | } |
494 | ||
0d143fe1 JB |
495 | switch (sdata->vif.type) { |
496 | case NL80211_IFTYPE_AP_VLAN: | |
3edaf3e6 JB |
497 | /* no need to tell driver, but set carrier */ |
498 | if (rtnl_dereference(sdata->bss->beacon)) | |
499 | netif_carrier_on(dev); | |
500 | else | |
501 | netif_carrier_off(dev); | |
0d143fe1 JB |
502 | break; |
503 | case NL80211_IFTYPE_MONITOR: | |
504 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
505 | local->cooked_mntrs++; | |
506 | break; | |
507 | } | |
508 | ||
075e0847 JB |
509 | if (local->monitors == 0 && local->open_count == 0) { |
510 | res = ieee80211_add_virtual_monitor(local); | |
511 | if (res) | |
512 | goto err_stop; | |
513 | } | |
514 | ||
0d143fe1 JB |
515 | /* must be before the call to ieee80211_configure_filter */ |
516 | local->monitors++; | |
e8975581 | 517 | if (local->monitors == 1) { |
0869aea0 JB |
518 | local->hw.conf.flags |= IEEE80211_CONF_MONITOR; |
519 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
e8975581 | 520 | } |
0d143fe1 | 521 | |
85416a4f | 522 | ieee80211_adjust_monitor_flags(sdata, 1); |
0d143fe1 | 523 | ieee80211_configure_filter(local); |
53e9b1de DG |
524 | |
525 | netif_carrier_on(dev); | |
0d143fe1 | 526 | break; |
0d143fe1 | 527 | default: |
34d4bc4d | 528 | if (coming_up) { |
075e0847 JB |
529 | ieee80211_del_virtual_monitor(local); |
530 | ||
7b7eab6f | 531 | res = drv_add_interface(local, sdata); |
34d4bc4d JB |
532 | if (res) |
533 | goto err_stop; | |
3a25a8c8 JB |
534 | res = ieee80211_check_queues(sdata); |
535 | if (res) | |
536 | goto err_del_interface; | |
34d4bc4d | 537 | } |
0d143fe1 | 538 | |
29cbe68c | 539 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 540 | local->fif_pspoll++; |
7be5086d | 541 | local->fif_probe_req++; |
e3b90ca2 | 542 | |
e3b90ca2 | 543 | ieee80211_configure_filter(local); |
7be5086d JB |
544 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
545 | local->fif_probe_req++; | |
a3c9aa51 | 546 | } |
e3b90ca2 | 547 | |
f142c6b9 JB |
548 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) |
549 | changed |= ieee80211_reset_erp_info(sdata); | |
0d143fe1 | 550 | ieee80211_bss_info_change_notify(sdata, changed); |
0d143fe1 | 551 | |
c405c629 JB |
552 | switch (sdata->vif.type) { |
553 | case NL80211_IFTYPE_STATION: | |
554 | case NL80211_IFTYPE_ADHOC: | |
555 | case NL80211_IFTYPE_AP: | |
556 | case NL80211_IFTYPE_MESH_POINT: | |
0d143fe1 | 557 | netif_carrier_off(dev); |
c405c629 | 558 | break; |
1411af15 | 559 | case NL80211_IFTYPE_WDS: |
f142c6b9 | 560 | case NL80211_IFTYPE_P2P_DEVICE: |
1411af15 | 561 | break; |
c405c629 | 562 | default: |
0d143fe1 | 563 | netif_carrier_on(dev); |
c405c629 | 564 | } |
59034591 EP |
565 | |
566 | /* | |
567 | * set default queue parameters so drivers don't | |
568 | * need to initialise the hardware if the hardware | |
569 | * doesn't start up with sane defaults | |
570 | */ | |
3abead59 | 571 | ieee80211_set_wmm_default(sdata, true); |
0d143fe1 JB |
572 | } |
573 | ||
2d2080c3 JB |
574 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
575 | ||
0d143fe1 JB |
576 | if (sdata->vif.type == NL80211_IFTYPE_WDS) { |
577 | /* Create STA entry for the WDS peer */ | |
578 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, | |
579 | GFP_KERNEL); | |
580 | if (!sta) { | |
581 | res = -ENOMEM; | |
582 | goto err_del_interface; | |
583 | } | |
584 | ||
83d5cc01 JB |
585 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); |
586 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); | |
587 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
0d143fe1 JB |
588 | |
589 | res = sta_info_insert(sta); | |
590 | if (res) { | |
591 | /* STA has been freed */ | |
592 | goto err_del_interface; | |
593 | } | |
1be7fe8d BJ |
594 | |
595 | rate_control_rate_init(sta); | |
1411af15 | 596 | netif_carrier_on(dev); |
f142c6b9 JB |
597 | } else if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) { |
598 | rcu_assign_pointer(local->p2p_sdata, sdata); | |
0d143fe1 JB |
599 | } |
600 | ||
0d143fe1 JB |
601 | /* |
602 | * set_multicast_list will be invoked by the networking core | |
603 | * which will check whether any increments here were done in | |
604 | * error and sync them down to the hardware as filter flags. | |
605 | */ | |
606 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
607 | atomic_inc(&local->iff_allmultis); | |
608 | ||
609 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
610 | atomic_inc(&local->iff_promiscs); | |
611 | ||
7da7cc1d | 612 | mutex_lock(&local->mtx); |
5cff20e6 | 613 | hw_reconf_flags |= __ieee80211_recalc_idle(local); |
7da7cc1d | 614 | mutex_unlock(&local->mtx); |
5cff20e6 | 615 | |
34d4bc4d JB |
616 | if (coming_up) |
617 | local->open_count++; | |
618 | ||
59034591 | 619 | if (hw_reconf_flags) |
e8975581 | 620 | ieee80211_hw_config(local, hw_reconf_flags); |
0d143fe1 | 621 | |
10f644a4 | 622 | ieee80211_recalc_ps(local, -1); |
965bedad | 623 | |
f142c6b9 JB |
624 | if (dev) |
625 | netif_tx_start_all_queues(dev); | |
0d143fe1 JB |
626 | |
627 | return 0; | |
628 | err_del_interface: | |
7b7eab6f | 629 | drv_remove_interface(local, sdata); |
0d143fe1 | 630 | err_stop: |
24487981 JB |
631 | if (!local->open_count) |
632 | drv_stop(local); | |
0d143fe1 JB |
633 | err_del_bss: |
634 | sdata->bss = NULL; | |
635 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
636 | list_del(&sdata->u.vlan.list); | |
4d6c36fa | 637 | /* might already be clear but that doesn't matter */ |
2d2080c3 | 638 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
0d143fe1 JB |
639 | return res; |
640 | } | |
641 | ||
34d4bc4d | 642 | static int ieee80211_open(struct net_device *dev) |
0d143fe1 JB |
643 | { |
644 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
34d4bc4d JB |
645 | int err; |
646 | ||
647 | /* fail early if user set an invalid address */ | |
2fcf2824 | 648 | if (!is_valid_ether_addr(dev->dev_addr)) |
34d4bc4d JB |
649 | return -EADDRNOTAVAIL; |
650 | ||
651 | err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type); | |
652 | if (err) | |
653 | return err; | |
654 | ||
f142c6b9 | 655 | return ieee80211_do_open(&sdata->wdev, true); |
34d4bc4d JB |
656 | } |
657 | ||
658 | static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, | |
659 | bool going_down) | |
660 | { | |
0d143fe1 | 661 | struct ieee80211_local *local = sdata->local; |
5061b0c2 JB |
662 | unsigned long flags; |
663 | struct sk_buff *skb, *tmp; | |
e8975581 | 664 | u32 hw_reconf_flags = 0; |
5061b0c2 | 665 | int i; |
2cf22b89 | 666 | enum nl80211_channel_type orig_ct; |
0d143fe1 | 667 | |
c29acf20 RM |
668 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
669 | ||
e2fd5dbc | 670 | if (rcu_access_pointer(local->scan_sdata) == sdata) |
352ffad6 BC |
671 | ieee80211_scan_cancel(local); |
672 | ||
0d143fe1 JB |
673 | /* |
674 | * Stop TX on this interface first. | |
675 | */ | |
f142c6b9 JB |
676 | if (sdata->dev) |
677 | netif_tx_stop_all_queues(sdata->dev); | |
0d143fe1 | 678 | |
2eb278e0 | 679 | ieee80211_roc_purge(sdata); |
af6b6374 | 680 | |
0d143fe1 JB |
681 | /* |
682 | * Remove all stations associated with this interface. | |
683 | * | |
684 | * This must be done before calling ops->remove_interface() | |
685 | * because otherwise we can later invoke ops->sta_notify() | |
686 | * whenever the STAs are removed, and that invalidates driver | |
687 | * assumptions about always getting a vif pointer that is valid | |
688 | * (because if we remove a STA after ops->remove_interface() | |
689 | * the driver will have removed the vif info already!) | |
690 | * | |
b9dcf712 JB |
691 | * This is relevant only in AP, WDS and mesh modes, since in |
692 | * all other modes we've already removed all stations when | |
693 | * disconnecting etc. | |
0d143fe1 JB |
694 | */ |
695 | sta_info_flush(local, sdata); | |
696 | ||
697 | /* | |
698 | * Don't count this interface for promisc/allmulti while it | |
699 | * is down. dev_mc_unsync() will invoke set_multicast_list | |
700 | * on the master interface which will sync these down to the | |
701 | * hardware as filter flags. | |
702 | */ | |
703 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
704 | atomic_dec(&local->iff_allmultis); | |
705 | ||
706 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
707 | atomic_dec(&local->iff_promiscs); | |
708 | ||
7be5086d | 709 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 710 | local->fif_pspoll--; |
7be5086d JB |
711 | local->fif_probe_req--; |
712 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
713 | local->fif_probe_req--; | |
714 | } | |
e3b90ca2 | 715 | |
f142c6b9 JB |
716 | if (sdata->dev) { |
717 | netif_addr_lock_bh(sdata->dev); | |
718 | spin_lock_bh(&local->filter_lock); | |
719 | __hw_addr_unsync(&local->mc_list, &sdata->dev->mc, | |
720 | sdata->dev->addr_len); | |
721 | spin_unlock_bh(&local->filter_lock); | |
722 | netif_addr_unlock_bh(sdata->dev); | |
3b8d81e0 | 723 | |
f142c6b9 JB |
724 | ieee80211_configure_filter(local); |
725 | } | |
3ac64bee | 726 | |
7cbf0ba5 VN |
727 | del_timer_sync(&local->dynamic_ps_timer); |
728 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
0d143fe1 JB |
729 | |
730 | /* APs need special treatment */ | |
731 | if (sdata->vif.type == NL80211_IFTYPE_AP) { | |
57c9fff3 | 732 | struct ieee80211_sub_if_data *vlan, *tmpsdata; |
40b275b6 JB |
733 | struct beacon_data *old_beacon = |
734 | rtnl_dereference(sdata->u.ap.beacon); | |
aa7a0080 | 735 | struct probe_resp *old_probe_resp = |
02945821 | 736 | rtnl_dereference(sdata->u.ap.probe_resp); |
0d143fe1 | 737 | |
b9dcf712 JB |
738 | /* sdata_running will return false, so this will disable */ |
739 | ieee80211_bss_info_change_notify(sdata, | |
740 | BSS_CHANGED_BEACON_ENABLED); | |
741 | ||
02945821 | 742 | /* remove beacon and probe response */ |
a9b3cd7f | 743 | RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); |
02945821 | 744 | RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); |
0d143fe1 JB |
745 | synchronize_rcu(); |
746 | kfree(old_beacon); | |
aa7a0080 | 747 | kfree(old_probe_resp); |
0d143fe1 JB |
748 | |
749 | /* down all dependent devices, that is VLANs */ | |
57c9fff3 | 750 | list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, |
0d143fe1 JB |
751 | u.vlan.list) |
752 | dev_close(vlan->dev); | |
753 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
6f2d9335 JB |
754 | |
755 | /* free all potentially still buffered bcast frames */ | |
756 | local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps_bc_buf); | |
757 | skb_queue_purge(&sdata->u.ap.ps_bc_buf); | |
afa762f6 EP |
758 | } else if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
759 | ieee80211_mgd_stop(sdata); | |
0d143fe1 JB |
760 | } |
761 | ||
34d4bc4d JB |
762 | if (going_down) |
763 | local->open_count--; | |
0d143fe1 JB |
764 | |
765 | switch (sdata->vif.type) { | |
766 | case NL80211_IFTYPE_AP_VLAN: | |
767 | list_del(&sdata->u.vlan.list); | |
768 | /* no need to tell driver */ | |
769 | break; | |
770 | case NL80211_IFTYPE_MONITOR: | |
771 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
772 | local->cooked_mntrs--; | |
773 | break; | |
774 | } | |
775 | ||
776 | local->monitors--; | |
e8975581 | 777 | if (local->monitors == 0) { |
0869aea0 JB |
778 | local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; |
779 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
075e0847 | 780 | ieee80211_del_virtual_monitor(local); |
e8975581 | 781 | } |
0d143fe1 | 782 | |
85416a4f | 783 | ieee80211_adjust_monitor_flags(sdata, -1); |
0d143fe1 | 784 | ieee80211_configure_filter(local); |
0d143fe1 | 785 | break; |
f142c6b9 JB |
786 | case NL80211_IFTYPE_P2P_DEVICE: |
787 | /* relies on synchronize_rcu() below */ | |
788 | rcu_assign_pointer(local->p2p_sdata, NULL); | |
789 | /* fall through */ | |
0d143fe1 | 790 | default: |
c1475ca9 | 791 | flush_work(&sdata->work); |
35f20c14 JB |
792 | /* |
793 | * When we get here, the interface is marked down. | |
794 | * Call synchronize_rcu() to wait for the RX path | |
795 | * should it be using the interface and enqueuing | |
796 | * frames at this very time on another CPU. | |
797 | */ | |
798 | synchronize_rcu(); | |
799 | skb_queue_purge(&sdata->skb_queue); | |
800 | ||
b9dcf712 JB |
801 | /* |
802 | * Free all remaining keys, there shouldn't be any, | |
803 | * except maybe group keys in AP more or WDS? | |
804 | */ | |
ad0e2b5a | 805 | ieee80211_free_keys(sdata); |
b9dcf712 | 806 | |
34d4bc4d | 807 | if (going_down) |
7b7eab6f | 808 | drv_remove_interface(local, sdata); |
0d143fe1 JB |
809 | } |
810 | ||
811 | sdata->bss = NULL; | |
812 | ||
7da7cc1d | 813 | mutex_lock(&local->mtx); |
5cff20e6 | 814 | hw_reconf_flags |= __ieee80211_recalc_idle(local); |
7da7cc1d | 815 | mutex_unlock(&local->mtx); |
5cff20e6 JB |
816 | |
817 | ieee80211_recalc_ps(local, -1); | |
818 | ||
0d143fe1 | 819 | if (local->open_count == 0) { |
4e6cbfd0 JL |
820 | if (local->ops->napi_poll) |
821 | napi_disable(&local->napi); | |
ea77f12f | 822 | ieee80211_clear_tx_pending(local); |
84f6a01c | 823 | ieee80211_stop_device(local); |
0d143fe1 | 824 | |
e8975581 JB |
825 | /* no reconfiguring after stop! */ |
826 | hw_reconf_flags = 0; | |
0d143fe1 JB |
827 | } |
828 | ||
2cf22b89 BG |
829 | /* Re-calculate channel-type, in case there are multiple vifs |
830 | * on different channel types. | |
831 | */ | |
832 | orig_ct = local->_oper_channel_type; | |
833 | ieee80211_set_channel_type(local, NULL, NL80211_CHAN_NO_HT); | |
834 | ||
e8975581 | 835 | /* do after stop to avoid reconfiguring when we stop anyway */ |
2cf22b89 | 836 | if (hw_reconf_flags || (orig_ct != local->_oper_channel_type)) |
e8975581 JB |
837 | ieee80211_hw_config(local, hw_reconf_flags); |
838 | ||
5061b0c2 JB |
839 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
840 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { | |
841 | skb_queue_walk_safe(&local->pending[i], skb, tmp) { | |
842 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
843 | if (info->control.vif == &sdata->vif) { | |
844 | __skb_unlink(skb, &local->pending[i]); | |
845 | dev_kfree_skb_irq(skb); | |
846 | } | |
847 | } | |
848 | } | |
849 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
075e0847 JB |
850 | |
851 | if (local->monitors == local->open_count && local->monitors > 0) | |
852 | ieee80211_add_virtual_monitor(local); | |
34d4bc4d JB |
853 | } |
854 | ||
855 | static int ieee80211_stop(struct net_device *dev) | |
856 | { | |
857 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
858 | ||
859 | ieee80211_do_stop(sdata, true); | |
5061b0c2 | 860 | |
0d143fe1 JB |
861 | return 0; |
862 | } | |
863 | ||
864 | static void ieee80211_set_multicast_list(struct net_device *dev) | |
865 | { | |
0d143fe1 | 866 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b4a4bf5d | 867 | struct ieee80211_local *local = sdata->local; |
0d143fe1 JB |
868 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
869 | ||
870 | allmulti = !!(dev->flags & IFF_ALLMULTI); | |
871 | promisc = !!(dev->flags & IFF_PROMISC); | |
872 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); | |
873 | sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); | |
874 | ||
875 | if (allmulti != sdata_allmulti) { | |
876 | if (dev->flags & IFF_ALLMULTI) | |
877 | atomic_inc(&local->iff_allmultis); | |
878 | else | |
879 | atomic_dec(&local->iff_allmultis); | |
880 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; | |
881 | } | |
882 | ||
883 | if (promisc != sdata_promisc) { | |
884 | if (dev->flags & IFF_PROMISC) | |
885 | atomic_inc(&local->iff_promiscs); | |
886 | else | |
887 | atomic_dec(&local->iff_promiscs); | |
888 | sdata->flags ^= IEEE80211_SDATA_PROMISC; | |
889 | } | |
3b8d81e0 | 890 | spin_lock_bh(&local->filter_lock); |
22bedad3 | 891 | __hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len); |
3b8d81e0 | 892 | spin_unlock_bh(&local->filter_lock); |
3ac64bee | 893 | ieee80211_queue_work(&local->hw, &local->reconfig_filter); |
0d143fe1 JB |
894 | } |
895 | ||
75636525 JB |
896 | /* |
897 | * Called when the netdev is removed or, by the code below, before | |
898 | * the interface type changes. | |
899 | */ | |
f142c6b9 | 900 | static void ieee80211_teardown_sdata(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 901 | { |
75636525 | 902 | struct ieee80211_local *local = sdata->local; |
75636525 | 903 | int flushed; |
f0706e82 JB |
904 | int i; |
905 | ||
75636525 JB |
906 | /* free extra data */ |
907 | ieee80211_free_keys(sdata); | |
908 | ||
aee14ceb JM |
909 | ieee80211_debugfs_remove_netdev(sdata); |
910 | ||
f0706e82 | 911 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) |
75636525 JB |
912 | __skb_queue_purge(&sdata->fragments[i].skb_list); |
913 | sdata->fragment_next = 0; | |
11a843b7 | 914 | |
b9dcf712 JB |
915 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
916 | mesh_rmc_free(sdata); | |
75636525 JB |
917 | |
918 | flushed = sta_info_flush(local, sdata); | |
919 | WARN_ON(flushed); | |
f0706e82 JB |
920 | } |
921 | ||
f142c6b9 JB |
922 | static void ieee80211_uninit(struct net_device *dev) |
923 | { | |
924 | ieee80211_teardown_sdata(IEEE80211_DEV_TO_SUB_IF(dev)); | |
925 | } | |
926 | ||
cf0277e7 JB |
927 | static u16 ieee80211_netdev_select_queue(struct net_device *dev, |
928 | struct sk_buff *skb) | |
929 | { | |
930 | return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb); | |
931 | } | |
932 | ||
587e729e JB |
933 | static const struct net_device_ops ieee80211_dataif_ops = { |
934 | .ndo_open = ieee80211_open, | |
935 | .ndo_stop = ieee80211_stop, | |
f142c6b9 | 936 | .ndo_uninit = ieee80211_uninit, |
587e729e | 937 | .ndo_start_xmit = ieee80211_subif_start_xmit, |
afc4b13d | 938 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e | 939 | .ndo_change_mtu = ieee80211_change_mtu, |
47846c9b | 940 | .ndo_set_mac_address = ieee80211_change_mac, |
cf0277e7 | 941 | .ndo_select_queue = ieee80211_netdev_select_queue, |
587e729e JB |
942 | }; |
943 | ||
cf0277e7 JB |
944 | static u16 ieee80211_monitor_select_queue(struct net_device *dev, |
945 | struct sk_buff *skb) | |
946 | { | |
947 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
948 | struct ieee80211_local *local = sdata->local; | |
949 | struct ieee80211_hdr *hdr; | |
950 | struct ieee80211_radiotap_header *rtap = (void *)skb->data; | |
951 | ||
32c5057b | 952 | if (local->hw.queues < IEEE80211_NUM_ACS) |
cf0277e7 JB |
953 | return 0; |
954 | ||
955 | if (skb->len < 4 || | |
b49bb574 | 956 | skb->len < le16_to_cpu(rtap->it_len) + 2 /* frame control */) |
cf0277e7 JB |
957 | return 0; /* doesn't matter, frame will be dropped */ |
958 | ||
b49bb574 | 959 | hdr = (void *)((u8 *)skb->data + le16_to_cpu(rtap->it_len)); |
cf0277e7 | 960 | |
00e96dec | 961 | return ieee80211_select_queue_80211(sdata, skb, hdr); |
cf0277e7 JB |
962 | } |
963 | ||
587e729e JB |
964 | static const struct net_device_ops ieee80211_monitorif_ops = { |
965 | .ndo_open = ieee80211_open, | |
966 | .ndo_stop = ieee80211_stop, | |
f142c6b9 | 967 | .ndo_uninit = ieee80211_uninit, |
587e729e | 968 | .ndo_start_xmit = ieee80211_monitor_start_xmit, |
afc4b13d | 969 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e JB |
970 | .ndo_change_mtu = ieee80211_change_mtu, |
971 | .ndo_set_mac_address = eth_mac_addr, | |
cf0277e7 | 972 | .ndo_select_queue = ieee80211_monitor_select_queue, |
587e729e JB |
973 | }; |
974 | ||
975 | static void ieee80211_if_setup(struct net_device *dev) | |
976 | { | |
977 | ether_setup(dev); | |
550fd08c | 978 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
587e729e | 979 | dev->netdev_ops = &ieee80211_dataif_ops; |
587e729e JB |
980 | dev->destructor = free_netdev; |
981 | } | |
982 | ||
1fa57d01 JB |
983 | static void ieee80211_iface_work(struct work_struct *work) |
984 | { | |
985 | struct ieee80211_sub_if_data *sdata = | |
986 | container_of(work, struct ieee80211_sub_if_data, work); | |
987 | struct ieee80211_local *local = sdata->local; | |
988 | struct sk_buff *skb; | |
344eec67 | 989 | struct sta_info *sta; |
c1475ca9 | 990 | struct ieee80211_ra_tid *ra_tid; |
1fa57d01 JB |
991 | |
992 | if (!ieee80211_sdata_running(sdata)) | |
993 | return; | |
994 | ||
995 | if (local->scanning) | |
996 | return; | |
997 | ||
998 | /* | |
999 | * ieee80211_queue_work() should have picked up most cases, | |
1000 | * here we'll pick the rest. | |
1001 | */ | |
1002 | if (WARN(local->suspended, | |
1003 | "interface work scheduled while going to suspend\n")) | |
1004 | return; | |
1005 | ||
1006 | /* first process frames */ | |
1007 | while ((skb = skb_dequeue(&sdata->skb_queue))) { | |
bed7ee6e JB |
1008 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
1009 | ||
c1475ca9 JB |
1010 | if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_START) { |
1011 | ra_tid = (void *)&skb->cb; | |
1012 | ieee80211_start_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
1013 | ra_tid->tid); | |
1014 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_STOP) { | |
1015 | ra_tid = (void *)&skb->cb; | |
1016 | ieee80211_stop_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
1017 | ra_tid->tid); | |
1018 | } else if (ieee80211_is_action(mgmt->frame_control) && | |
1019 | mgmt->u.action.category == WLAN_CATEGORY_BACK) { | |
bed7ee6e | 1020 | int len = skb->len; |
bed7ee6e | 1021 | |
a93e3644 | 1022 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1023 | sta = sta_info_get_bss(sdata, mgmt->sa); |
bed7ee6e JB |
1024 | if (sta) { |
1025 | switch (mgmt->u.action.u.addba_req.action_code) { | |
1026 | case WLAN_ACTION_ADDBA_REQ: | |
1027 | ieee80211_process_addba_request( | |
1028 | local, sta, mgmt, len); | |
1029 | break; | |
1030 | case WLAN_ACTION_ADDBA_RESP: | |
1031 | ieee80211_process_addba_resp(local, sta, | |
1032 | mgmt, len); | |
1033 | break; | |
1034 | case WLAN_ACTION_DELBA: | |
1035 | ieee80211_process_delba(sdata, sta, | |
1036 | mgmt, len); | |
1037 | break; | |
1038 | default: | |
1039 | WARN_ON(1); | |
1040 | break; | |
1041 | } | |
1042 | } | |
a93e3644 | 1043 | mutex_unlock(&local->sta_mtx); |
344eec67 JB |
1044 | } else if (ieee80211_is_data_qos(mgmt->frame_control)) { |
1045 | struct ieee80211_hdr *hdr = (void *)mgmt; | |
1046 | /* | |
1047 | * So the frame isn't mgmt, but frame_control | |
1048 | * is at the right place anyway, of course, so | |
1049 | * the if statement is correct. | |
1050 | * | |
1051 | * Warn if we have other data frame types here, | |
1052 | * they must not get here. | |
1053 | */ | |
1054 | WARN_ON(hdr->frame_control & | |
1055 | cpu_to_le16(IEEE80211_STYPE_NULLFUNC)); | |
1056 | WARN_ON(!(hdr->seq_ctrl & | |
1057 | cpu_to_le16(IEEE80211_SCTL_FRAG))); | |
1058 | /* | |
1059 | * This was a fragment of a frame, received while | |
1060 | * a block-ack session was active. That cannot be | |
1061 | * right, so terminate the session. | |
1062 | */ | |
a93e3644 | 1063 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1064 | sta = sta_info_get_bss(sdata, mgmt->sa); |
344eec67 JB |
1065 | if (sta) { |
1066 | u16 tid = *ieee80211_get_qos_ctl(hdr) & | |
1067 | IEEE80211_QOS_CTL_TID_MASK; | |
1068 | ||
1069 | __ieee80211_stop_rx_ba_session( | |
1070 | sta, tid, WLAN_BACK_RECIPIENT, | |
53f73c09 JB |
1071 | WLAN_REASON_QSTA_REQUIRE_SETUP, |
1072 | true); | |
344eec67 | 1073 | } |
a93e3644 | 1074 | mutex_unlock(&local->sta_mtx); |
bed7ee6e | 1075 | } else switch (sdata->vif.type) { |
1fa57d01 JB |
1076 | case NL80211_IFTYPE_STATION: |
1077 | ieee80211_sta_rx_queued_mgmt(sdata, skb); | |
1078 | break; | |
1079 | case NL80211_IFTYPE_ADHOC: | |
1080 | ieee80211_ibss_rx_queued_mgmt(sdata, skb); | |
1081 | break; | |
1082 | case NL80211_IFTYPE_MESH_POINT: | |
1083 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1084 | break; | |
1085 | ieee80211_mesh_rx_queued_mgmt(sdata, skb); | |
1086 | break; | |
1087 | default: | |
1088 | WARN(1, "frame for unexpected interface type"); | |
1fa57d01 JB |
1089 | break; |
1090 | } | |
36b3a628 JB |
1091 | |
1092 | kfree_skb(skb); | |
1fa57d01 JB |
1093 | } |
1094 | ||
1095 | /* then other type-dependent work */ | |
1096 | switch (sdata->vif.type) { | |
1097 | case NL80211_IFTYPE_STATION: | |
1098 | ieee80211_sta_work(sdata); | |
1099 | break; | |
1100 | case NL80211_IFTYPE_ADHOC: | |
1101 | ieee80211_ibss_work(sdata); | |
1102 | break; | |
1103 | case NL80211_IFTYPE_MESH_POINT: | |
1104 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1105 | break; | |
1106 | ieee80211_mesh_work(sdata); | |
1107 | break; | |
1108 | default: | |
1109 | break; | |
1110 | } | |
1111 | } | |
1112 | ||
1113 | ||
75636525 JB |
1114 | /* |
1115 | * Helper function to initialise an interface to a specific type. | |
1116 | */ | |
1117 | static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, | |
05c914fe | 1118 | enum nl80211_iftype type) |
f0706e82 | 1119 | { |
75636525 JB |
1120 | /* clear type-dependent union */ |
1121 | memset(&sdata->u, 0, sizeof(sdata->u)); | |
1122 | ||
1123 | /* and set some type-dependent values */ | |
1124 | sdata->vif.type = type; | |
2ca27bcf | 1125 | sdata->vif.p2p = false; |
60719ffd | 1126 | sdata->wdev.iftype = type; |
75636525 | 1127 | |
a621fa4d JB |
1128 | sdata->control_port_protocol = cpu_to_be16(ETH_P_PAE); |
1129 | sdata->control_port_no_encrypt = false; | |
1130 | ||
b53be792 SW |
1131 | sdata->noack_map = 0; |
1132 | ||
f142c6b9 JB |
1133 | /* only monitor/p2p-device differ */ |
1134 | if (sdata->dev) { | |
1135 | sdata->dev->netdev_ops = &ieee80211_dataif_ops; | |
1136 | sdata->dev->type = ARPHRD_ETHER; | |
1137 | } | |
75636525 | 1138 | |
35f20c14 | 1139 | skb_queue_head_init(&sdata->skb_queue); |
1fa57d01 | 1140 | INIT_WORK(&sdata->work, ieee80211_iface_work); |
35f20c14 | 1141 | |
75636525 | 1142 | switch (type) { |
2ca27bcf JB |
1143 | case NL80211_IFTYPE_P2P_GO: |
1144 | type = NL80211_IFTYPE_AP; | |
1145 | sdata->vif.type = type; | |
1146 | sdata->vif.p2p = true; | |
1147 | /* fall through */ | |
05c914fe | 1148 | case NL80211_IFTYPE_AP: |
75636525 JB |
1149 | skb_queue_head_init(&sdata->u.ap.ps_bc_buf); |
1150 | INIT_LIST_HEAD(&sdata->u.ap.vlans); | |
1151 | break; | |
2ca27bcf JB |
1152 | case NL80211_IFTYPE_P2P_CLIENT: |
1153 | type = NL80211_IFTYPE_STATION; | |
1154 | sdata->vif.type = type; | |
1155 | sdata->vif.p2p = true; | |
1156 | /* fall through */ | |
05c914fe | 1157 | case NL80211_IFTYPE_STATION: |
9c6bd790 | 1158 | ieee80211_sta_setup_sdata(sdata); |
472dbc45 | 1159 | break; |
46900298 JB |
1160 | case NL80211_IFTYPE_ADHOC: |
1161 | ieee80211_ibss_setup_sdata(sdata); | |
1162 | break; | |
05c914fe | 1163 | case NL80211_IFTYPE_MESH_POINT: |
75636525 JB |
1164 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
1165 | ieee80211_mesh_init_sdata(sdata); | |
1166 | break; | |
05c914fe | 1167 | case NL80211_IFTYPE_MONITOR: |
75636525 | 1168 | sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP; |
587e729e | 1169 | sdata->dev->netdev_ops = &ieee80211_monitorif_ops; |
75636525 JB |
1170 | sdata->u.mntr_flags = MONITOR_FLAG_CONTROL | |
1171 | MONITOR_FLAG_OTHER_BSS; | |
1172 | break; | |
05c914fe JB |
1173 | case NL80211_IFTYPE_WDS: |
1174 | case NL80211_IFTYPE_AP_VLAN: | |
98104fde | 1175 | case NL80211_IFTYPE_P2P_DEVICE: |
f142c6b9 | 1176 | break; |
05c914fe | 1177 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1178 | case NUM_NL80211_IFTYPES: |
75636525 JB |
1179 | BUG(); |
1180 | break; | |
1181 | } | |
1182 | ||
1183 | ieee80211_debugfs_add_netdev(sdata); | |
1184 | } | |
1185 | ||
34d4bc4d JB |
1186 | static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, |
1187 | enum nl80211_iftype type) | |
1188 | { | |
1189 | struct ieee80211_local *local = sdata->local; | |
1190 | int ret, err; | |
2ca27bcf JB |
1191 | enum nl80211_iftype internal_type = type; |
1192 | bool p2p = false; | |
34d4bc4d JB |
1193 | |
1194 | ASSERT_RTNL(); | |
1195 | ||
1196 | if (!local->ops->change_interface) | |
1197 | return -EBUSY; | |
1198 | ||
1199 | switch (sdata->vif.type) { | |
1200 | case NL80211_IFTYPE_AP: | |
1201 | case NL80211_IFTYPE_STATION: | |
1202 | case NL80211_IFTYPE_ADHOC: | |
1203 | /* | |
1204 | * Could maybe also all others here? | |
1205 | * Just not sure how that interacts | |
1206 | * with the RX/config path e.g. for | |
1207 | * mesh. | |
1208 | */ | |
1209 | break; | |
1210 | default: | |
1211 | return -EBUSY; | |
1212 | } | |
1213 | ||
1214 | switch (type) { | |
1215 | case NL80211_IFTYPE_AP: | |
1216 | case NL80211_IFTYPE_STATION: | |
1217 | case NL80211_IFTYPE_ADHOC: | |
1218 | /* | |
1219 | * Could probably support everything | |
1220 | * but WDS here (WDS do_open can fail | |
1221 | * under memory pressure, which this | |
1222 | * code isn't prepared to handle). | |
1223 | */ | |
1224 | break; | |
2ca27bcf JB |
1225 | case NL80211_IFTYPE_P2P_CLIENT: |
1226 | p2p = true; | |
1227 | internal_type = NL80211_IFTYPE_STATION; | |
1228 | break; | |
1229 | case NL80211_IFTYPE_P2P_GO: | |
1230 | p2p = true; | |
1231 | internal_type = NL80211_IFTYPE_AP; | |
1232 | break; | |
34d4bc4d JB |
1233 | default: |
1234 | return -EBUSY; | |
1235 | } | |
1236 | ||
2ca27bcf | 1237 | ret = ieee80211_check_concurrent_iface(sdata, internal_type); |
34d4bc4d JB |
1238 | if (ret) |
1239 | return ret; | |
1240 | ||
1241 | ieee80211_do_stop(sdata, false); | |
1242 | ||
f142c6b9 | 1243 | ieee80211_teardown_sdata(sdata); |
34d4bc4d | 1244 | |
2ca27bcf | 1245 | ret = drv_change_interface(local, sdata, internal_type, p2p); |
34d4bc4d JB |
1246 | if (ret) |
1247 | type = sdata->vif.type; | |
1248 | ||
3a25a8c8 JB |
1249 | /* |
1250 | * Ignore return value here, there's not much we can do since | |
1251 | * the driver changed the interface type internally already. | |
1252 | * The warnings will hopefully make driver authors fix it :-) | |
1253 | */ | |
1254 | ieee80211_check_queues(sdata); | |
1255 | ||
34d4bc4d JB |
1256 | ieee80211_setup_sdata(sdata, type); |
1257 | ||
f142c6b9 | 1258 | err = ieee80211_do_open(&sdata->wdev, false); |
34d4bc4d JB |
1259 | WARN(err, "type change: do_open returned %d", err); |
1260 | ||
1261 | return ret; | |
1262 | } | |
1263 | ||
f3947e2d | 1264 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, |
05c914fe | 1265 | enum nl80211_iftype type) |
75636525 | 1266 | { |
34d4bc4d JB |
1267 | int ret; |
1268 | ||
f3947e2d JB |
1269 | ASSERT_RTNL(); |
1270 | ||
2ca27bcf | 1271 | if (type == ieee80211_vif_type_p2p(&sdata->vif)) |
f3947e2d JB |
1272 | return 0; |
1273 | ||
e60c7744 | 1274 | /* Setting ad-hoc mode on non-IBSS channel is not supported. */ |
dcebf45c PR |
1275 | if (sdata->local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS && |
1276 | type == NL80211_IFTYPE_ADHOC) | |
e60c7744 JB |
1277 | return -EOPNOTSUPP; |
1278 | ||
34d4bc4d JB |
1279 | if (ieee80211_sdata_running(sdata)) { |
1280 | ret = ieee80211_runtime_change_iftype(sdata, type); | |
1281 | if (ret) | |
1282 | return ret; | |
1283 | } else { | |
1284 | /* Purge and reset type-dependent state. */ | |
f142c6b9 | 1285 | ieee80211_teardown_sdata(sdata); |
34d4bc4d JB |
1286 | ieee80211_setup_sdata(sdata, type); |
1287 | } | |
75636525 JB |
1288 | |
1289 | /* reset some values that shouldn't be kept across type changes */ | |
bda3933a | 1290 | sdata->vif.bss_conf.basic_rates = |
96dd22ac | 1291 | ieee80211_mandatory_rates(sdata->local, |
679ef4ea | 1292 | sdata->local->oper_channel->band); |
75636525 | 1293 | sdata->drop_unencrypted = 0; |
9bc383de JB |
1294 | if (type == NL80211_IFTYPE_STATION) |
1295 | sdata->u.mgd.use_4addr = false; | |
f3947e2d JB |
1296 | |
1297 | return 0; | |
f0706e82 JB |
1298 | } |
1299 | ||
fa9029f8 | 1300 | static void ieee80211_assign_perm_addr(struct ieee80211_local *local, |
f142c6b9 | 1301 | u8 *perm_addr, enum nl80211_iftype type) |
fa9029f8 JB |
1302 | { |
1303 | struct ieee80211_sub_if_data *sdata; | |
1304 | u64 mask, start, addr, val, inc; | |
1305 | u8 *m; | |
1306 | u8 tmp_addr[ETH_ALEN]; | |
1307 | int i; | |
1308 | ||
1309 | /* default ... something at least */ | |
f142c6b9 | 1310 | memcpy(perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN); |
fa9029f8 JB |
1311 | |
1312 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask) && | |
1313 | local->hw.wiphy->n_addresses <= 1) | |
1314 | return; | |
1315 | ||
fa9029f8 JB |
1316 | mutex_lock(&local->iflist_mtx); |
1317 | ||
1318 | switch (type) { | |
1319 | case NL80211_IFTYPE_MONITOR: | |
1320 | /* doesn't matter */ | |
1321 | break; | |
1322 | case NL80211_IFTYPE_WDS: | |
1323 | case NL80211_IFTYPE_AP_VLAN: | |
1324 | /* match up with an AP interface */ | |
1325 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1326 | if (sdata->vif.type != NL80211_IFTYPE_AP) | |
1327 | continue; | |
f142c6b9 | 1328 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); |
fa9029f8 JB |
1329 | break; |
1330 | } | |
1331 | /* keep default if no AP interface present */ | |
1332 | break; | |
6d71117a JB |
1333 | case NL80211_IFTYPE_P2P_CLIENT: |
1334 | case NL80211_IFTYPE_P2P_GO: | |
1335 | if (local->hw.flags & IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF) { | |
1336 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1337 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) | |
1338 | continue; | |
1339 | if (!ieee80211_sdata_running(sdata)) | |
1340 | continue; | |
1341 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); | |
1342 | goto out_unlock; | |
1343 | } | |
1344 | } | |
1345 | /* otherwise fall through */ | |
fa9029f8 JB |
1346 | default: |
1347 | /* assign a new address if possible -- try n_addresses first */ | |
1348 | for (i = 0; i < local->hw.wiphy->n_addresses; i++) { | |
1349 | bool used = false; | |
1350 | ||
1351 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1352 | if (memcmp(local->hw.wiphy->addresses[i].addr, | |
1353 | sdata->vif.addr, ETH_ALEN) == 0) { | |
1354 | used = true; | |
1355 | break; | |
1356 | } | |
1357 | } | |
1358 | ||
1359 | if (!used) { | |
f142c6b9 | 1360 | memcpy(perm_addr, |
fa9029f8 JB |
1361 | local->hw.wiphy->addresses[i].addr, |
1362 | ETH_ALEN); | |
1363 | break; | |
1364 | } | |
1365 | } | |
1366 | ||
1367 | /* try mask if available */ | |
1368 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
1369 | break; | |
1370 | ||
1371 | m = local->hw.wiphy->addr_mask; | |
1372 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1373 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1374 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1375 | ||
1376 | if (__ffs64(mask) + hweight64(mask) != fls64(mask)) { | |
1377 | /* not a contiguous mask ... not handled now! */ | |
bdcbd8e0 | 1378 | pr_info("not contiguous\n"); |
fa9029f8 JB |
1379 | break; |
1380 | } | |
1381 | ||
1382 | m = local->hw.wiphy->perm_addr; | |
1383 | start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1384 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1385 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1386 | ||
1387 | inc = 1ULL<<__ffs64(mask); | |
1388 | val = (start & mask); | |
1389 | addr = (start & ~mask) | (val & mask); | |
1390 | do { | |
1391 | bool used = false; | |
1392 | ||
1393 | tmp_addr[5] = addr >> 0*8; | |
1394 | tmp_addr[4] = addr >> 1*8; | |
1395 | tmp_addr[3] = addr >> 2*8; | |
1396 | tmp_addr[2] = addr >> 3*8; | |
1397 | tmp_addr[1] = addr >> 4*8; | |
1398 | tmp_addr[0] = addr >> 5*8; | |
1399 | ||
1400 | val += inc; | |
1401 | ||
1402 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1403 | if (memcmp(tmp_addr, sdata->vif.addr, | |
1404 | ETH_ALEN) == 0) { | |
1405 | used = true; | |
1406 | break; | |
1407 | } | |
1408 | } | |
1409 | ||
1410 | if (!used) { | |
f142c6b9 | 1411 | memcpy(perm_addr, tmp_addr, ETH_ALEN); |
fa9029f8 JB |
1412 | break; |
1413 | } | |
1414 | addr = (start & ~mask) | (val & mask); | |
1415 | } while (addr != start); | |
1416 | ||
1417 | break; | |
1418 | } | |
1419 | ||
6d71117a | 1420 | out_unlock: |
fa9029f8 JB |
1421 | mutex_unlock(&local->iflist_mtx); |
1422 | } | |
1423 | ||
3e122be0 | 1424 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, |
84efbb84 | 1425 | struct wireless_dev **new_wdev, enum nl80211_iftype type, |
ee385855 | 1426 | struct vif_params *params) |
f0706e82 | 1427 | { |
f142c6b9 | 1428 | struct net_device *ndev = NULL; |
f0706e82 | 1429 | struct ieee80211_sub_if_data *sdata = NULL; |
75636525 | 1430 | int ret, i; |
ded81f6b | 1431 | int txqs = 1; |
f0706e82 JB |
1432 | |
1433 | ASSERT_RTNL(); | |
75636525 | 1434 | |
f142c6b9 JB |
1435 | if (type == NL80211_IFTYPE_P2P_DEVICE) { |
1436 | struct wireless_dev *wdev; | |
1437 | ||
1438 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, | |
1439 | GFP_KERNEL); | |
1440 | if (!sdata) | |
1441 | return -ENOMEM; | |
1442 | wdev = &sdata->wdev; | |
1443 | ||
1444 | sdata->dev = NULL; | |
1445 | strlcpy(sdata->name, name, IFNAMSIZ); | |
1446 | ieee80211_assign_perm_addr(local, wdev->address, type); | |
1447 | memcpy(sdata->vif.addr, wdev->address, ETH_ALEN); | |
1448 | } else { | |
1449 | if (local->hw.queues >= IEEE80211_NUM_ACS) | |
1450 | txqs = IEEE80211_NUM_ACS; | |
1451 | ||
1452 | ndev = alloc_netdev_mqs(sizeof(*sdata) + | |
1453 | local->hw.vif_data_size, | |
1454 | name, ieee80211_if_setup, txqs, 1); | |
1455 | if (!ndev) | |
1456 | return -ENOMEM; | |
1457 | dev_net_set(ndev, wiphy_net(local->hw.wiphy)); | |
1458 | ||
1459 | ndev->needed_headroom = local->tx_headroom + | |
1460 | 4*6 /* four MAC addresses */ | |
1461 | + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */ | |
1462 | + 6 /* mesh */ | |
1463 | + 8 /* rfc1042/bridge tunnel */ | |
1464 | - ETH_HLEN /* ethernet hard_header_len */ | |
1465 | + IEEE80211_ENCRYPT_HEADROOM; | |
1466 | ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM; | |
1467 | ||
1468 | ret = dev_alloc_name(ndev, ndev->name); | |
1469 | if (ret < 0) { | |
1470 | free_netdev(ndev); | |
1471 | return ret; | |
1472 | } | |
1473 | ||
1474 | ieee80211_assign_perm_addr(local, ndev->perm_addr, type); | |
1475 | memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN); | |
1476 | SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy)); | |
1477 | ||
1478 | /* don't use IEEE80211_DEV_TO_SUB_IF -- it checks too much */ | |
1479 | sdata = netdev_priv(ndev); | |
1480 | ndev->ieee80211_ptr = &sdata->wdev; | |
1481 | memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN); | |
1482 | memcpy(sdata->name, ndev->name, IFNAMSIZ); | |
1483 | ||
1484 | sdata->dev = ndev; | |
1485 | } | |
75636525 JB |
1486 | |
1487 | /* initialise type-independent data */ | |
f0706e82 | 1488 | sdata->wdev.wiphy = local->hw.wiphy; |
f0706e82 | 1489 | sdata->local = local; |
68542962 JO |
1490 | #ifdef CONFIG_INET |
1491 | sdata->arp_filter_state = true; | |
1492 | #endif | |
75636525 JB |
1493 | |
1494 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) | |
1495 | skb_queue_head_init(&sdata->fragments[i].skb_list); | |
1496 | ||
1497 | INIT_LIST_HEAD(&sdata->key_list); | |
1498 | ||
37eb0b16 JM |
1499 | for (i = 0; i < IEEE80211_NUM_BANDS; i++) { |
1500 | struct ieee80211_supported_band *sband; | |
1501 | sband = local->hw.wiphy->bands[i]; | |
1502 | sdata->rc_rateidx_mask[i] = | |
1503 | sband ? (1 << sband->n_bitrates) - 1 : 0; | |
19468413 SW |
1504 | if (sband) |
1505 | memcpy(sdata->rc_rateidx_mcs_mask[i], | |
1506 | sband->ht_cap.mcs.rx_mask, | |
1507 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
1508 | else | |
1509 | memset(sdata->rc_rateidx_mcs_mask[i], 0, | |
1510 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
37eb0b16 | 1511 | } |
75636525 | 1512 | |
3a25a8c8 JB |
1513 | ieee80211_set_default_queues(sdata); |
1514 | ||
75636525 JB |
1515 | /* setup type-dependent data */ |
1516 | ieee80211_setup_sdata(sdata, type); | |
f0706e82 | 1517 | |
f142c6b9 JB |
1518 | if (ndev) { |
1519 | if (params) { | |
1520 | ndev->ieee80211_ptr->use_4addr = params->use_4addr; | |
1521 | if (type == NL80211_IFTYPE_STATION) | |
1522 | sdata->u.mgd.use_4addr = params->use_4addr; | |
1523 | } | |
9bc383de | 1524 | |
f142c6b9 | 1525 | ndev->features |= local->hw.netdev_features; |
72d78728 | 1526 | |
f142c6b9 JB |
1527 | ret = register_netdevice(ndev); |
1528 | if (ret) { | |
1529 | free_netdev(ndev); | |
1530 | return ret; | |
1531 | } | |
1532 | } | |
f0706e82 | 1533 | |
c771c9d8 | 1534 | mutex_lock(&local->iflist_mtx); |
79010420 | 1535 | list_add_tail_rcu(&sdata->list, &local->interfaces); |
c771c9d8 | 1536 | mutex_unlock(&local->iflist_mtx); |
79010420 | 1537 | |
84efbb84 JB |
1538 | if (new_wdev) |
1539 | *new_wdev = &sdata->wdev; | |
f0706e82 | 1540 | |
f0706e82 | 1541 | return 0; |
f0706e82 JB |
1542 | } |
1543 | ||
f698d856 | 1544 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1545 | { |
f0706e82 | 1546 | ASSERT_RTNL(); |
11a843b7 | 1547 | |
c771c9d8 | 1548 | mutex_lock(&sdata->local->iflist_mtx); |
75636525 | 1549 | list_del_rcu(&sdata->list); |
c771c9d8 JB |
1550 | mutex_unlock(&sdata->local->iflist_mtx); |
1551 | ||
75636525 | 1552 | synchronize_rcu(); |
f142c6b9 JB |
1553 | |
1554 | if (sdata->dev) { | |
1555 | unregister_netdevice(sdata->dev); | |
1556 | } else { | |
1557 | cfg80211_unregister_wdev(&sdata->wdev); | |
1558 | kfree(sdata); | |
1559 | } | |
1560 | } | |
1561 | ||
1562 | void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata) | |
1563 | { | |
1564 | if (WARN_ON_ONCE(!test_bit(SDATA_STATE_RUNNING, &sdata->state))) | |
1565 | return; | |
1566 | ieee80211_do_stop(sdata, true); | |
1567 | ieee80211_teardown_sdata(sdata); | |
f0706e82 JB |
1568 | } |
1569 | ||
75636525 JB |
1570 | /* |
1571 | * Remove all interfaces, may only be called at hardware unregistration | |
1572 | * time because it doesn't do RCU-safe list removals. | |
1573 | */ | |
1574 | void ieee80211_remove_interfaces(struct ieee80211_local *local) | |
f0706e82 | 1575 | { |
75636525 | 1576 | struct ieee80211_sub_if_data *sdata, *tmp; |
efe117ab | 1577 | LIST_HEAD(unreg_list); |
f142c6b9 | 1578 | LIST_HEAD(wdev_list); |
f0706e82 JB |
1579 | |
1580 | ASSERT_RTNL(); | |
1581 | ||
efe117ab | 1582 | mutex_lock(&local->iflist_mtx); |
75636525 JB |
1583 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
1584 | list_del(&sdata->list); | |
c771c9d8 | 1585 | |
f142c6b9 JB |
1586 | if (sdata->dev) |
1587 | unregister_netdevice_queue(sdata->dev, &unreg_list); | |
1588 | else | |
1589 | list_add(&sdata->list, &wdev_list); | |
f0706e82 | 1590 | } |
efe117ab ED |
1591 | mutex_unlock(&local->iflist_mtx); |
1592 | unregister_netdevice_many(&unreg_list); | |
5f04d506 | 1593 | list_del(&unreg_list); |
f142c6b9 JB |
1594 | |
1595 | list_for_each_entry_safe(sdata, tmp, &wdev_list, list) { | |
1596 | list_del(&sdata->list); | |
1597 | cfg80211_unregister_wdev(&sdata->wdev); | |
1598 | kfree(sdata); | |
1599 | } | |
f0706e82 | 1600 | } |
5cff20e6 | 1601 | |
47846c9b JB |
1602 | static int netdev_notify(struct notifier_block *nb, |
1603 | unsigned long state, | |
1604 | void *ndev) | |
1605 | { | |
1606 | struct net_device *dev = ndev; | |
1607 | struct ieee80211_sub_if_data *sdata; | |
1608 | ||
1609 | if (state != NETDEV_CHANGENAME) | |
1610 | return 0; | |
1611 | ||
1612 | if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy) | |
1613 | return 0; | |
1614 | ||
1615 | if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid) | |
1616 | return 0; | |
1617 | ||
1618 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1619 | ||
2f5265e6 | 1620 | memcpy(sdata->name, dev->name, IFNAMSIZ); |
47846c9b JB |
1621 | |
1622 | ieee80211_debugfs_rename_netdev(sdata); | |
1623 | return 0; | |
1624 | } | |
1625 | ||
1626 | static struct notifier_block mac80211_netdev_notifier = { | |
1627 | .notifier_call = netdev_notify, | |
1628 | }; | |
1629 | ||
1630 | int ieee80211_iface_init(void) | |
1631 | { | |
1632 | return register_netdevice_notifier(&mac80211_netdev_notifier); | |
1633 | } | |
1634 | ||
1635 | void ieee80211_iface_exit(void) | |
1636 | { | |
1637 | unregister_netdevice_notifier(&mac80211_netdev_notifier); | |
1638 | } |